Ski Brand RMU Teases Enduro Bike With Dual-Chain Drive

Ski brand RMU (Rocky Mountain Underground) has unveiled a prototype enduro mountain bike featuring a unique dual-chain drive system. The design, teased on Pinkbike, appears to incorporate a gearbox or internal transmission, with two chains visible – one from the cranks to the gearbox, and another from the gearbox to the rear wheel. This unconventional approach aims to centralise mass and potentially offer a wider gear range or improved durability compared to traditional drivetrains.

This development is significant as it marks a foray into the highly competitive mountain bike market by an established ski manufacturer, a crossover not entirely unprecedented but always noteworthy. RMU's background in winter sports equipment suggests an emphasis on robust engineering and performance in demanding conditions. The dual-chain concept, while not entirely new in niche applications, represents a bold departure from the industry-standard derailleur or even single-chain gearbox systems, hinting at a desire to innovate rather than merely replicate.

Whether this dual-chain concept is a genuine breakthrough or an engineering curiosity remains to be seen. One can only hope its on-trail performance is as robust as its apparent mechanical complexity.